CN204228936U - A kind of field signal detection system - Google Patents
A kind of field signal detection system Download PDFInfo
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- CN204228936U CN204228936U CN201420591314.9U CN201420591314U CN204228936U CN 204228936 U CN204228936 U CN 204228936U CN 201420591314 U CN201420591314 U CN 201420591314U CN 204228936 U CN204228936 U CN 204228936U
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000003750 conditioning effect Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000474 nursing effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Abstract
The utility model relates to detection system technical field, especially a kind of field signal detection system.It comprises connect successively for detect field signal intensity magnetic field detection unit, for signal condition signal conditioning circuit, for collect signal modulus control interface unit, for signal transacting single chip circuit and for data transmission data transmission unit; Signal conditioning circuit, modulus control interface unit, single chip circuit and data transmission power supply is connected with power distribution unit simultaneously; Single chip circuit bag C8051F410 singlechip chip and AD7734 modulus conversion chip.The utility model carries out single separately power supply by power distribution list, thus the impact that under reducing duty, digital device is powered on analog device; Further, utilize the high precision test function of C8051F410 singlechip chip and AD7734 modulus conversion chip, make it improve accuracy of detection, improve the dirigibility of practical application.
Description
Technical field
The utility model relates to detection system technical field, especially a kind of field signal detection system.
Background technology
In fields such as geophysics, space science, biomedicine, military technology, industrial flaw detections, to the detection in magnetic field, there is very consequence.Along with the development of electronic technology, computer automation technology and machine-building and technology, detection method has moved towards miniaturization, electronization, digitizing and robotization, to wide-range and high precision development, particularly to the measurement of low-intensity magnetic field.At present, the problems such as the low and practical application of existing field signal detection system ubiquity comprehensive detection precision is dumb.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide one can realize comprehensive detection precision height and practical application field signal detection system flexibly.
To achieve these goals, the utility model adopts following technical scheme:
A kind of field signal detection system, it comprises magnetic field detection unit, power distribution unit, signal conditioning circuit, modulus control interface unit, single chip circuit and data transmission unit;
Described magnetic field detection unit inspection field signal intensity also inputs to signal conditioning circuit, signal carries out nursing one's health and the signal after conditioning is inputted modulus control interface unit by described signal conditioning circuit, signal carries out collecting and inputing to single chip circuit by described modulus control interface unit, described single chip circuit carries out signal transacting and feeds back to data transmission unit, and described power distribution unit is connected with signal conditioning circuit, modulus control interface unit, single chip circuit and data transmission unit respectively;
Described signal conditioning circuit comprises filtering circuit, temperature-compensation circuit, zeroing amplifying circuit and A/D change-over circuit, described filtering circuit is connected with magnetic field detection unit and filtered signal is inputed to temperature-compensation circuit, signal is carried out temperature compensation and the signal after compensating is inputed to zeroing amplifying circuit by described temperature-compensation circuit, signal carries out returning to zero and amplifies and the signal after conditioning amplification is inputed to A/D change-over circuit by described zeroing amplifying circuit, signal is carried out A/D conversion and inputs in single chip circuit by described A/D change-over circuit, described filtering circuit, temperature-compensation circuit, zeroing amplifying circuit is connected with power distribution unit respectively with A/D change-over circuit.
Preferably, described single chip circuit comprises bandgap voltage reference, modulus conversion chip and singlechip chip, the input end of described bandgap voltage reference is connected with A/D change-over circuit, the output terminal of described bandgap voltage reference and the REFIN of modulus conversion chip hold pin to be connected, and the SCLK of described modulus conversion chip holds pin, DIN to hold pin, DOUT to hold pin and RDY to hold pin to hold pin, SPIMOSI to hold pin, SPIMISO to hold pin and P2.0 to hold pin to be connected respectively with the SPICLK of singlechip chip.
Preferably, described singlechip chip is C8051F410 singlechip chip, and described modulus conversion chip is AD7734 modulus conversion chip.
Owing to have employed such scheme, the utility model carries out single separately power supply by power distribution list, thus the impact that under reducing duty, digital device is powered on analog device, and, utilize the high precision test function of C8051F410 singlechip chip and AD7734 modulus conversion chip, make it improve accuracy of detection, improve the dirigibility of practical application.
Accompanying drawing explanation
Fig. 1 is the system principle diagram of the utility model embodiment;
Fig. 2 is the circuit structure diagram of the single chip circuit of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As depicted in figs. 1 and 2, a kind of field signal detection system of the present embodiment, it comprises magnetic field detection unit 1, power distribution unit 6, signal conditioning circuit 2, modulus control interface unit 3, single chip circuit 4 and data transmission unit 5, magnetic field detection unit 1 detects field signal intensity and inputs to signal conditioning circuit 2, signal carries out nursing one's health and the signal after conditioning is inputted modulus control interface unit 3 by signal conditioning circuit 2, signal carries out collecting and inputs to single chip circuit 4 by modulus control interface unit 3, single chip circuit 4 carries out signal transacting and feeds back to data transmission unit 5, and power distribution unit 6 is connected with signal conditioning circuit 2, modulus control interface unit 3, single chip circuit 4 and data transmission unit 5 respectively, signal conditioning circuit 2 comprises filtering circuit 7, temperature-compensation circuit 8, zeroing amplifying circuit 9 and A/D change-over circuit 10, filtering circuit 7 is connected with magnetic field detection unit 1 and filtered signal is inputed to temperature-compensation circuit 8, signal is carried out temperature compensation and the signal after compensating is inputed to zeroing amplifying circuit 9 by temperature-compensation circuit 8, signal carries out returning to zero and amplifies and the signal after conditioning amplification is inputed to A/D change-over circuit 10 by zeroing amplifying circuit 9, signal is carried out A/D conversion and to input in single chip circuit 4 by A/D change-over circuit 10, filtering circuit 7, temperature-compensation circuit 8, zeroing amplifying circuit 9 is connected with power distribution unit 6 respectively with A/D change-over circuit 10.The power distribution unit 6 of the present embodiment adopts 5V powered battery, inner without the need to carrying out power rail conversion, and carries out single separately power supply by power distribution, thus the impact that under reducing duty, digital device is powered on analog device; And, the modulate circuit 2 of the present embodiment completes amplification, temperature compensation, filtering, it adopts digital conditioning technology, built-in temperature sensor, every 1ms upgrades this temperature value, and with this value for index, the bridge pressure supply of setting magnetic field detection unit 1 and zero compensation, realize zero point and sensitivity within the scope of one 20-50 DEG C and keep constant target.
Simultaneously, the single chip circuit 4 of the present embodiment as shown in Figure 2, namely single chip circuit 4 comprises bandgap voltage reference U1, modulus conversion chip U2 and singlechip chip U3, the input end of bandgap voltage reference U1 is connected with A/D change-over circuit 10, the output terminal of bandgap voltage reference U1 holds pin to be connected with the REFIN of modulus conversion chip U2, and the SCLK of modulus conversion chip U2 holds pin, DIN to hold pin, DOUT to hold pin and RDY to hold pin to hold pin, SPIMOSI to hold pin, SPIMISO to hold pin and P2.0 to hold pin to be connected respectively with the SPICLK of singlechip chip U3.Wherein, singlechip chip U3 is C8051F410 singlechip chip, modulus conversion chip U2 is AD7734 modulus conversion chip, institute C8051F410 singlechip chip is a mixed signal SOC (system on a chip) type singlechip chip, the analog to digital converter of inner integrated 16 or 24, can be set in arbitrarily on certain or certain several port, be highly suitable for multi-channel analog data acquisition system (DAS); AD7734 modulus conversion chip aly has high precision, high-throughput AFE (analog front end), peak one, true l6 position peak discrimination can be realized, and the analog to digital converter of 500s total conversion time (2kHz passage bridge), be suitable for the multiplexing application scenario of high-resolution multi-way.AD7734 has the highest 24, and without losing code performance, its front end has 4 single ended input passages, when adopting 5V single analog Power supply, can accept the unipolarity of the highest 4-10V or true bipolarity input range.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. a field signal detection system, is characterized in that: it comprises magnetic field detection unit, power distribution unit, signal conditioning circuit, modulus control interface unit, single-chip microcomputer and data transmission unit;
Described magnetic field detection unit inspection field signal intensity also inputs to signal conditioning circuit, signal carries out nursing one's health and the signal after conditioning is inputted modulus control interface unit by described signal conditioning circuit, signal carries out collecting and inputing to single chip circuit by described modulus control interface unit, described single chip circuit carries out signal transacting and feeds back to data transmission unit, and described power distribution unit is connected with signal conditioning circuit, modulus control interface unit, single chip circuit and data transmission unit respectively;
Described signal conditioning circuit comprises filtering circuit, temperature-compensation circuit, zeroing amplifying circuit and A/D change-over circuit, described filtering circuit is connected with magnetic field detection unit and filtered signal is inputed to temperature-compensation circuit, signal is carried out temperature compensation and the signal after compensating is inputed to zeroing amplifying circuit by described temperature-compensation circuit, signal carries out returning to zero and amplifies and the signal after conditioning amplification is inputed to A/D change-over circuit by described zeroing amplifying circuit, signal is carried out A/D conversion and inputs in single chip circuit by described A/D change-over circuit, described filtering circuit, temperature-compensation circuit, zeroing amplifying circuit is connected with power distribution unit respectively with A/D change-over circuit.
2. a kind of field signal detection system as claimed in claim 1, it is characterized in that: described single chip circuit comprises bandgap voltage reference, modulus conversion chip and singlechip chip, the input end of described bandgap voltage reference is connected with A/D change-over circuit, the output terminal of described bandgap voltage reference and the REFIN of modulus conversion chip hold pin to be connected, and the SCLK of described modulus conversion chip holds pin, DIN to hold pin, DOUT to hold pin and RDY to hold pin to hold pin, SPIMOSI to hold pin, SPIMISO to hold pin and P2.0 to hold pin to be connected respectively with the SPICLK of singlechip chip.
3. a kind of field signal detection system as claimed in claim 2, it is characterized in that: described singlechip chip is C8051F410 singlechip chip, described modulus conversion chip is AD7734 modulus conversion chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591314.9U CN204228936U (en) | 2014-10-14 | 2014-10-14 | A kind of field signal detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591314.9U CN204228936U (en) | 2014-10-14 | 2014-10-14 | A kind of field signal detection system |
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| Publication Number | Publication Date |
|---|---|
| CN204228936U true CN204228936U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420591314.9U Expired - Fee Related CN204228936U (en) | 2014-10-14 | 2014-10-14 | A kind of field signal detection system |
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| Country | Link |
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| CN (1) | CN204228936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866714A (en) * | 2016-05-17 | 2016-08-17 | 深圳市智信精密仪器有限公司 | Magnetic field intensity detecting suite |
| CN107091607A (en) * | 2017-05-10 | 2017-08-25 | 北京布莱迪测控仪表有限公司 | Angle measurement unit and method based on magnetic core logical circuit deflection |
-
2014
- 2014-10-14 CN CN201420591314.9U patent/CN204228936U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866714A (en) * | 2016-05-17 | 2016-08-17 | 深圳市智信精密仪器有限公司 | Magnetic field intensity detecting suite |
| CN107091607A (en) * | 2017-05-10 | 2017-08-25 | 北京布莱迪测控仪表有限公司 | Angle measurement unit and method based on magnetic core logical circuit deflection |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151014 |
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| EXPY | Termination of patent right or utility model |